From 998f50407ffc9370565c7ed3fcd1366adccdfbbf Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Wed, 12 Feb 2020 13:58:35 +0000
Subject: security: Add hooks to rule on setting a watch

Add security hooks that will allow an LSM to rule on whether or not a watch
may be set.  More than one hook is required as the watches watch different
types of object.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jamorris@linux.microsoft.com>
cc: Casey Schaufler <casey@schaufler-ca.com>
cc: Stephen Smalley <sds@tycho.nsa.gov>
cc: linux-security-module@vger.kernel.org
---
 security/security.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'security')

diff --git a/security/security.c b/security/security.c
index 7d55607120b4..c73334ab2882 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2016,6 +2016,13 @@ int security_post_notification(const struct cred *w_cred,
 }
 #endif /* CONFIG_WATCH_QUEUE */
 
+#ifdef CONFIG_KEY_NOTIFICATIONS
+int security_watch_key(struct key *key)
+{
+	return call_int_hook(watch_key, 0, key);
+}
+#endif
+
 #ifdef CONFIG_SECURITY_NETWORK
 
 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
-- 
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